Patent US4873771A successfully refreshed from Google Patents.
Patent US3559954A successfully refreshed from Google Patents.
US3559954A
Expired / Lapsed
US
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Hydraulic gripper and moving jack
Assignee: Hydranautics Corp
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Filing: 1969-01-15
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Granted: 1971-02-02
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Expires: 1989-01-15
Abstract
Abstract A hydraulic gripper and moving jack for moving heavy structures such as an oil derrick along a flanged member is disclosed. The gripper engages the flanged member with a frictional grip. The gripping forces are developed by a hydraulic cylinder which acts on the flanged member through hinged side plates; a second piston coupled to the heavy structure enables the structure to be walked along the flanged member.
Inventors
- 👤 Henry B Chambers
- 👤 Clair W Tellefson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
B; B66; B66F; B66F1/00; B66F1/02; B66F1/025; E; E21; E21B; E21B15/00; E21B15/003
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A hydraulic gripper and moving jack for moving a heavy structure along a flanged member comprising: a pair of sideplates each having at least one edge; a pair of jaws for engaging the lower surface of said flange each disposed along said edges of said sideplates; a shoe for engaging one surface of said flange, and pivotally mounting at least one of said sideplates to engage said flange member; a first hydraulic means coupled to said sideplates to move at least one of said side plates about said pivot; and a second hydraulic means for moving said heavy object along said flanged member coupled to said shoe and being suitable for engaging said heavy structure; whereby a heavy structure may be moved along a flanged member By first gripping said flange member between said jaws and said shoe by actuating said first hydraulic means and secondly by actuating said second hydraulic means.
Claim 2
Dependent Claim
152 words
A hydraulic gripper and moving jack for moving a heavy structure along a flanged member comprising: a pair of sideplates each having at least one edge; a pair of jaws for engaging the lower surface of said flange each disposed along said edges of said sideplates; a shoe for engaging one surface of said flange, and pivotally mounting at least one of said sideplates to engage said flange member; a first hydraulic means coupled to said sideplates to move at least one of said side plates about said pivot; and a second hydraulic means for moving said heavy object along said flanged member coupled to said shoe and being suitable for engaging said heavy structure; whereby a heavy structure may be moved along a flanged member By first gripping said flange member between said jaws and said shoe by actuating said first hydraulic means and secondly by actuating said second hydraulic means.
Claim 3
Dependent Claim
52 words
The hydraulic gripper and moving jack defined in claim 1 wherein: a first and second hydraulic means each comprises a cylinder and piston; and said first hydraulic means is coupled between said plates and both of said side plates are pivotally mounted and moved about said pivot by said first hydraulic means.
Claim 4
Dependent Claim
29 words
The hydraulic gripper and moving jack defined in claim 2 wherein said first and second cylinder and piston are approximately perpendicular to one another and in approximate parallel planes.
Claim 5
Dependent Claim
20 words
The hydraulic gripper and moving jack defined in claim 3 wherein said second cylinder is pivotally coupled to said shoe.
Claim 6
Dependent Claim
30 words
The hydraulic gripper and moving jack defined in claim 3 wherein said side plates are generally triangularly shaped with said jaws disposed along the base of said triangularly shaped sideplates.
Claim 7
Dependent Claim
30 words
The hydraulic gripper and moving jack defined in claim 5 wherein said hinged coupling between said sideplates and said shoe is approximately parallel to said base of said side plates.
Claim 8
Dependent Claim
201 words
A hydraulic gripper and moving jack for moving a heavy structure along an I-beam comprising: a pair of triangularly shaped sideplates each having a pair of jaws suitable for engaging the lower surface of the upper portion of said I-beam, each of said jaws disposed along one side of said triangularly shaped sideplates; a shoe for frictionally engaging the upper surface of the upper portion of said I-beam, hingingly coupled to said sideplates along a line in the proximity of and parallel to said jaws; a first hydraulic piston and cylinder for moving said sideplates about said hinges between said shoe and said sideplates, said cylinder hingingly coupled to said side plates in proximity of the angle of said triangularly shaped sideplate opposite said jaw and said piston hingingly coupled to said other sideplate in proximity of the angle of said triangularly shaped sideplate opposite said jaw; and a second hydraulic cylinder and piston, said cylinder hingingly coupled to said shoe and said piston being suitable for engaging said heavy structure; whereby a heavy structure may be moved along said I-beam by first gripping said flange member between said jaws and said shoe and secondly by actuating said second hydraulic means.
Claim 9
Dependent Claim
201 words
A hydraulic gripper and moving jack for moving a heavy structure along an I-beam comprising: a pair of triangularly shaped sideplates each having a pair of jaws suitable for engaging the lower surface of the upper portion of said I-beam, each of said jaws disposed along one side of said triangularly shaped sideplates; a shoe for frictionally engaging the upper surface of the upper portion of said I-beam, hingingly coupled to said sideplates along a line in the proximity of and parallel to said jaws; a first hydraulic piston and cylinder for moving said sideplates about said hinges between said shoe and said sideplates, said cylinder hingingly coupled to said side plates in proximity of the angle of said triangularly shaped sideplate opposite said jaw and said piston hingingly coupled to said other sideplate in proximity of the angle of said triangularly shaped sideplate opposite said jaw; and a second hydraulic cylinder and piston, said cylinder hingingly coupled to said shoe and said piston being suitable for engaging said heavy structure; whereby a heavy structure may be moved along said I-beam by first gripping said flange member between said jaws and said shoe and secondly by actuating said second hydraulic means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |